Deprecated in favor of:
The PayPal PHP Merchant SDK allows for integration with Express Checkout, Mass Pay, and Web Payments Pro APIs. In response to security mandates by the Payment Card Industry Council, PayPal is updating its services to require TLSv1.2 and HTTP/1.1 for all HTTPS connections. This includes a new 'tls' mode for testing TLSv1.2 connections and changes to the SDK core to handle TLS encryption and disable SSLv3 due to the Poodle vulnerability.
The PayPal PHP Merchant SDK offers robust integration options for developers to work with Express Checkout, Mass Pay, and Web Payments Pro APIs. By complying with TLSv1.2 and HTTP/1.1 standards, the SDK enhances security for handling credit card information. With features like dynamic configuration, multiple authentication methods, and support for Instant Payment Notifications, developers can efficiently implement PayPal payment solutions.